Is the difference here between "life of the car free supercharging" (older cars) and "free supercharging while you own it" (newer cars with referral code)? Such that the first category don't show anything on-screen (it's a characteristic of the car that the supercharging is always free), while in the second category the car is potentially chargeable, just that while it's connected to a qualifying account the rate is $0 ?
Or are we all getting the "paid supercharging" display, just that some of us haven't got the software update yet?